Dorus d



(No Model.)

.D.D.REEVBS.

DOOR BOLT.

Patented Nov. 14, 1893.

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wAsmNsTou u c I NITED STATES PATENT Prion.

DORUS D. REEVE S,'OF MCF ALL, MISSOURI, ASSIGNOR OF ONE-HALF TO T. H. HUNT, OF SAME PLACE.

DOOR-BOLT.

SPECIFICATION forming part of Letters Patent No. 508,635, dated November 14, 1893.

Application filed June 10, 1893.

- .To aZZ whom it may concern:

consists in certain peculiar and novel features of construction and combinations of parts, as will be hereinafter described and claimed.

In order that my invention may be fullyunderstood, I will proceed to describe it with reference to the accompanying drawings, in which Figure 1, is an inner face view of a single door, having my improved locking attach- 2 5 ,ments applied thereto in operative position.

Fig. 2, is an inner face view of a pair of double doors, and showing my improved attachments applied thereto in operative position.- Fig. 3,is an enlarged vertical sectional view of the casing shown in Fig. 1 and show-' ing the mechanism therein. I Fig. 4:, is a de tail perspective view of vthe lever or rock arm shown in Fig. 3. Fig. 5, is an enlarged vertical sectional view taken on the line 00-00 of Fig. 2. Fig. 6, is an enlarged vertical sectional view of the casing used in connection with the double door and showing the mechanism therein. Fig. 7, is a longitudinal sectional view, enlarged, of one of the spring actuated latches. Fig. 8, is a detail perspective view of the plate through which the bolt is adapted to operate. Fig. 9, is a horizontal sectional view, enlarged, taken on the line yy of Fig. 1. Fig. 10, is a detail perspective view of the locking block, which is used in connection with the double doors, and

which is adapted to prevent the knobs or.

handles of said doors being turned.

Before proceeding with the detailed description of the invention, I Wish to state that this device is designed particularly for $erial No. 477,140- (No model.)

use upon the double doors of churches,.

schools, &c., to obviate the inconvenience attending the loosening of the top and bottom latches separately, as well as the wrenching of the hinges and the racking of the door, due to the springing thereof to keep one latch from relooking while the other is being loosened.

In the drawings, 1 designates a door, and secured to the inner side thereof is a casing 2; said casing being cast or constructed in any other suitable manner. Extending centrally through the door and also through said casing is the shaft 3, carrying upon its opposite ends the knobs or handles 4 in the usual man her. jat'fi, within the casing, and mounted cenltrall'yupon the squared portion of the shaft is the lever 6, which is arranged obliquely iwithin the casing as shown. Thislever when fused in connection with the single door mechfanism is provided with an upwardly extending arm 7 projecting from its middle, which is formed in its outer end withthe radially extending slot 8 which engages loosely a pin 9 projecting from a sliding bolt 10; said slid- I ing bolt being adapted to operate through a hole or opening 11 formed in the adjacent and outer end wall of the casing. The sliding bolt 10 is provided' with a longitudinally extending slot 12 which engages a guide pin 13 projecting from the inner wall of the casing. It will thus be seen that when one or the other of the knobs or handles 4 is operated, the 1e This shaft is formed preferably square ver 6 is turned also, and this causes the slot'= ted arm 7 thereof to either slide the bolt out-t ward or inward, according to the directionin' upper end of.the upper casing and the lower end of the lower casing are formed with guide openings through which the sliding bolts or latches 17 are adapted to operate, and these latches are formed with a stem or extension 18 which projects respectively through the lower end of the upper casing and the upper end of the lower casing. A spiral spring 19 encircles each stem 18, and bears at its opposite ends against the shoulder 19 formed at the junction of the latch proper with its stem, and at the opposite end of the casing 14; the tendency of the springs being to force the upper latch 17, and the lower latch 17through openings 16 of the plates 15. Pivotally connected to the free ends of the stems 18 of said latches, are the rods 20, and pivotally connected to the outer ends of the lever 6, and passing through the slots 6" of the casing are the rods 21. The upwardly extending rod 21 and the downwardly extending rod 21 are adapted respectively to be adjustably connected to the depending rod 20 of the upper latch and the upwardly extending rod 20 of the lower latch, by means of the sliding plate 22 through which said rods are passed, and between the set screw 23 carried thereby; said set screw being adapted to impinge at its inner end upon said rods. By this adjustable connection, the device may be lengthened or shortened to correspond with the length of the door to which it is to be applied. From this construction it will be seen that as the door knob or handle is operated, the sliding lock 10 not only will be operated but the spring actuated latches 17 will also be operated at the same time. Mounted upon a rock-shaft or oscillatory rod 30, and within the casing 2, is an arm 3i which normally bears against the lever 6 and prevents the operation thereof. In order to accomplish this, the arm 31 is provided with a branch arm 32, and a spring 33, carried by the casing, supports said arm in position. When it is desired to operate the lever, the rod 30, which may be provided with a handleof any sort, is turned so as to move the arm 31 over against the adjacent end wall, where its own gravity will maintain it, until the shaft is turned in the reverse direction. When applied to donble doors, the arm 7 of the lever6is dispensed with, and also the sliding lock 10. In its place is substituted a device by which the turning of the door knobs may be prevented, which I will now proceed to describe. Piv otally mounted upon a pin 24 and preferably a suitable distance above the lower end of the inclined lever 6 is a locking block 25, the lower end of which normally rests upon the lower portion of said lever, and prevents the knob from being turned to unlatch the door. To operate this locking block, a key hole 26 is provided just below its pivotal point, and the key (not shown) is adapted to be inserted therethrough, andwhen turned in the direction of the arrow will raise said block to the position shown in dotted lines, and-so that it shall engage and be held in said position by the spring catch 27. When the block is in this position the door knob or handle may be operated to unlatch the doors. In order that the block may be moved downward to its former position when desired, I provide an outstanding arm or pin 28, which when the key is in the position shown in dotted lines is is adjacent to the key hole, and when the key turned in a direction opposite to that indicated by the dotted lines the latch is moved from its engagement with the spring plate 27, and is allowed to assume its normal position against the lower portion of the lever 6.

In connection with double doors, it is to be understood that I may apply my locking attachments to only one of the doors, and allow the other to be locked in any suitable or preferred manner, and in this instance I would prefer to use only one knob and that one upon the inside of the door. Also in applying this fastening to all kinds of small doors such as book case doors and also wardrobe doors, &c., I would use only a single knob on each door and it would be locked at the outside thereof.

From the above description it will be seen that I have produced locking attachments for doors, which are easily applied to or detached therefrom, and which are simple, strong, durable and inexpensive of construction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a door locking attachment, the, combination with a door having a casing at its inner side, a shaft extending through said casing having its middle squared and a knob upon each end, of a lever mounted upon the squared portion of the shaft within the casing, and having an upwardly projecting slotted arm, and a slide lock adapted to operate through said casing and having a pin engaged by the slotted arm of the lever, substantially as set forth.

2. In a door locking attachment, the combination with a door having a casing at its inner side, a shaft extending through said casing having its middle squared and a knob upon each end, of a lever mounted upon the squared portion of the shaft within the casing, and having an upwardly projecting slotted arm, and a slide lock adapted to operate through said casing and having a pin engaged by the slotted arm of the lever, anda spring actuated latch at the upper and lower ends of the door and adj ustably connected to the ends of said lever, substantially as set forth.

3. In a door locking attachment, the combination with a door having a casing, a shaft extending through the door and casing, and having a knob upon one end, and a lever rigidly mounted upon the shaft within the easing, and latches pivotally connected with said lever, and a locking block pivotally mounted within the casing, and means to operate said locking block, of a spring plate carried within the casing, and adapted to hold the locking block awaylfrom the lever so that the door knob may be turned, substantially as set block away from the lever so that .the door knobn ay be turned, and a pin or armpro- 15 jecting from said locking block, and adapted to be engaged to move the locking block from its connection with the spring plate, substantiallyas set forth.

In testimony whereof I-affix my signature in 20 the presence of two witnesses.

DORUS D. REEVES.

Witnessesi O. A. AXTELL, -T. H. HUNT. 

